Automated PDF form filling for W-9 and more with PDF.co

🧑‍💻 Description This workflow demonstrates how to take structured data (e.g., Name, Business, Address) and automatically fill a PDF form (IRS W-9) using PDF.co inside n8n.

The workflow extracts values from a data source (e.g., Set node, database, or webhook), maps those values to fields in a PDF template, and generates a completed PDF. This can be adapted for contracts, invoices, HR forms, or any standardized documents that need automation.

By chaining additional nodes, you can also store completed PDFs in Google Drive/Dropbox, email them to recipients, or route them into CRM/ERP systems.

Disclaimer: this template can only be used on self-hosted n8n instances


---

⚙️ Setup Instructions

1️⃣ Prepare Your Data - Add a Set node (or connect to your data source such as Google Sheets, Airtable, or a webhook). - Define fields like: - Name - Business - Address - CityState - These fields will map directly to form fields in the PDF.